Re: [osgi-dev] Some questions on OSGi and embedded devices
[EMAIL PROTECTED] wrote on 09/22/2006 01:46:17 PM: > Hi there, > I got some questions from a big customer and would like to ask them > here, since I don't really know the answers: > > - in order to implement MIDP3, is it a prerequisite to have OSGi, CDC > and JSR232 supported? No. MIDP3 is orthoginal to OSGi and JSR 232. It should be possible to implement MIDP3 with OSGi/JSR 232. > > - Is it possible to support OSGi on top of KVM, which is, does OSGi > demand the Java reflection system? By KVM, I assume you mean a CLDC VM? OSGi requires classloader support and some reflection. OSGi could be implemented on CLDC *IF* there was someone for the implementation to define and use class loaders and reflection. This does not need to be through the java.* API but could be some VM specific API. So the VM would have to provide that API and the framework impl would need to use that API. > > - Is there a way to support CLDC on top of CLC in order to support > both profiles with the same JMV/Code? Well CDC is a superset of CLDC. So you are already done. > > - Is there something like OSGi for C in order to handle dynamic dll > loading (in case the dynamics themselves are already solved, it's more > about dependency resolution and meta data between dlls/bundles) > A lot of the features of OSGi are based upon Java capabilities like dynamic class loading and unloading. None of the this exists in any standard way in native code. It would all have to be invented for each native platform assuming the native linker/loader even supported it. > > Cheers > > /peter > > > P.S. Thanks for a very nice OSGi Enterprise Workshop! > ___ > osgi-dev mailing list > osgi-dev@bundles.osgi.org > http://bundles.osgi.org/mailman/listinfo/osgi-dev BJ Hargrave Senior Technical Staff Member, IBM OSGi Fellow and CTO of the OSGi Alliance [EMAIL PROTECTED] Office: +1 407 849 9117 Mobile: +1 386 848 3788 ___ osgi-dev mailing list osgi-dev@bundles.osgi.org http://bundles.osgi.org/mailman/listinfo/osgi-dev
Re: [osgi-dev] Some questions on OSGi and embedded devices
PN> Hi there, PN> I got some questions from a big customer and would like to ask them PN> here, since I don't really know the answers: PN> - in order to implement MIDP3, is it a prerequisite to have OSGi, CDC PN> and JSR232 supported? Nope, MIDP 3.0 will run on CLDC and will not require OSGi/JSR 232. PN> - Is it possible to support OSGi on top of KVM, which is, does OSGi PN> demand the Java reflection system? Usually the problem is related to class loader. Implementing OSGi without reflection is virtually impossible because it is required in certain cases, like for example the filters. PN> - Is there a way to support CLDC on top of CLC in order to support PN> both profiles with the same JMV/Code? CLDC is a virtual subset of CDC so most code running on CLDC will run on CDC. PN> - Is there something like OSGi for C in order to handle dynamic dll PN> loading (in case the dynamics themselves are already solved, it's more PN> about dependency resolution and meta data between dlls/bundles) Nope, but it has been popping up its head from day 1. The problem is that we get so much from Java that if we go to native code we have to specify so much more. And security will be very hard. But there has been discussions, one of the discussions was around a model with X-COM from Mozilla. Kind regards, Peter Kriens PN> Cheers PN> /peter PN> P.S. Thanks for a very nice OSGi Enterprise Workshop! PN> ___ PN> osgi-dev mailing list PN> osgi-dev@bundles.osgi.org PN> http://bundles.osgi.org/mailman/listinfo/osgi-dev -- Peter Kriens Tel +33467542167 9C, Avenue St. DrézéryAOL,Yahoo: pkriens 34160 Beaulieu, FranceICQ 255570717 Skype pkriens Fax +1 8153772599 ___ osgi-dev mailing list osgi-dev@bundles.osgi.org http://bundles.osgi.org/mailman/listinfo/osgi-dev
[osgi-dev] Some questions on OSGi and embedded devices
Hi there, I got some questions from a big customer and would like to ask them here, since I don't really know the answers: - in order to implement MIDP3, is it a prerequisite to have OSGi, CDC and JSR232 supported? - Is it possible to support OSGi on top of KVM, which is, does OSGi demand the Java reflection system? - Is there a way to support CLDC on top of CLC in order to support both profiles with the same JMV/Code? - Is there something like OSGi for C in order to handle dynamic dll loading (in case the dynamics themselves are already solved, it's more about dependency resolution and meta data between dlls/bundles) Cheers /peter P.S. Thanks for a very nice OSGi Enterprise Workshop! ___ osgi-dev mailing list osgi-dev@bundles.osgi.org http://bundles.osgi.org/mailman/listinfo/osgi-dev
